| /* |
| * Ethernet driver for the WIZnet W5300 chip. |
| * |
| * Copyright (C) 2008-2009 WIZnet Co.,Ltd. |
| * Copyright (C) 2011 Taehun Kim <kth3321 <at> gmail.com> |
| * Copyright (C) 2012 Mike Sinkovsky <msink@permonline.ru> |
| * |
| * Licensed under the GPL-2 or later. |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/kconfig.h> |
| #include <linux/netdevice.h> |
| #include <linux/etherdevice.h> |
| #include <linux/platform_device.h> |
| #include <linux/platform_data/wiznet.h> |
| #include <linux/ethtool.h> |
| #include <linux/skbuff.h> |
| #include <linux/types.h> |
| #include <linux/errno.h> |
| #include <linux/delay.h> |
| #include <linux/slab.h> |
| #include <linux/spinlock.h> |
| #include <linux/io.h> |
| #include <linux/ioport.h> |
| #include <linux/interrupt.h> |
| #include <linux/irq.h> |
| #include <linux/gpio.h> |
| |
| #define DRV_NAME "w5300" |
| #define DRV_VERSION "2012-04-04" |
| |
| MODULE_DESCRIPTION("WIZnet W5300 Ethernet driver v"DRV_VERSION); |
| MODULE_AUTHOR("Mike Sinkovsky <msink@permonline.ru>"); |
| MODULE_ALIAS("platform:"DRV_NAME); |
| MODULE_LICENSE("GPL"); |
| |
| /* |
| * Registers |
| */ |
| #define W5300_MR 0x0000 /* Mode Register */ |
| #define MR_DBW (1 << 15) /* Data bus width */ |
| #define MR_MPF (1 << 14) /* Mac layer pause frame */ |
| #define MR_WDF(n) (((n)&7)<<11) /* Write data fetch time */ |
| #define MR_RDH (1 << 10) /* Read data hold time */ |
| #define MR_FS (1 << 8) /* FIFO swap */ |
| #define MR_RST (1 << 7) /* S/W reset */ |
| #define MR_PB (1 << 4) /* Ping block */ |
| #define MR_DBS (1 << 2) /* Data bus swap */ |
| #define MR_IND (1 << 0) /* Indirect mode */ |
| #define W5300_IR 0x0002 /* Interrupt Register */ |
| #define W5300_IMR 0x0004 /* Interrupt Mask Register */ |
| #define IR_S0 0x0001 /* S0 interrupt */ |
| #define W5300_SHARL 0x0008 /* Source MAC address (0123) */ |
| #define W5300_SHARH 0x000c /* Source MAC address (45) */ |
| #define W5300_TMSRL 0x0020 /* Transmit Memory Size (0123) */ |
| #define W5300_TMSRH 0x0024 /* Transmit Memory Size (4567) */ |
| #define W5300_RMSRL 0x0028 /* Receive Memory Size (0123) */ |
| #define W5300_RMSRH 0x002c /* Receive Memory Size (4567) */ |
| #define W5300_MTYPE 0x0030 /* Memory Type */ |
| #define W5300_IDR 0x00fe /* Chip ID register */ |
| #define IDR_W5300 0x5300 /* =0x5300 for WIZnet W5300 */ |
| #define W5300_S0_MR 0x0200 /* S0 Mode Register */ |
| #define S0_MR_CLOSED 0x0000 /* Close mode */ |
| #define S0_MR_MACRAW 0x0004 /* MAC RAW mode (promiscous) */ |
| #define S0_MR_MACRAW_MF 0x0044 /* MAC RAW mode (filtered) */ |
| #define W5300_S0_CR 0x0202 /* S0 Command Register */ |
| #define S0_CR_OPEN 0x0001 /* OPEN command */ |
| #define S0_CR_CLOSE 0x0010 /* CLOSE command */ |
| #define S0_CR_SEND 0x0020 /* SEND command */ |
| #define S0_CR_RECV 0x0040 /* RECV command */ |
| #define W5300_S0_IMR 0x0204 /* S0 Interrupt Mask Register */ |
| #define W5300_S0_IR 0x0206 /* S0 Interrupt Register */ |
| #define S0_IR_RECV 0x0004 /* Receive interrupt */ |
| #define S0_IR_SENDOK 0x0010 /* Send OK interrupt */ |
| #define W5300_S0_SSR 0x0208 /* S0 Socket Status Register */ |
| #define W5300_S0_TX_WRSR 0x0220 /* S0 TX Write Size Register */ |
| #define W5300_S0_TX_FSR 0x0224 /* S0 TX Free Size Register */ |
| #define W5300_S0_RX_RSR 0x0228 /* S0 Received data Size */ |
| #define W5300_S0_TX_FIFO 0x022e /* S0 Transmit FIFO */ |
| #define W5300_S0_RX_FIFO 0x0230 /* S0 Receive FIFO */ |
| #define W5300_REGS_LEN 0x0400 |
| |
| /* |
| * Device driver private data structure |
| */ |
| struct w5300_priv { |
| void __iomem *base; |
| spinlock_t reg_lock; |
| bool indirect; |
| u16 (*read) (struct w5300_priv *priv, u16 addr); |
| void (*write)(struct w5300_priv *priv, u16 addr, u16 data); |
| int irq; |
| int link_irq; |
| int link_gpio; |
| |
| struct napi_struct napi; |
| struct net_device *ndev; |
| bool promisc; |
| u32 msg_enable; |
| }; |
| |
| /************************************************************************ |
| * |
| * Lowlevel I/O functions |
| * |
| ***********************************************************************/ |
| |
| /* |
| * In direct address mode host system can directly access W5300 registers |
| * after mapping to Memory-Mapped I/O space. |
| * |
| * 0x400 bytes are required for memory space. |
| */ |
| static inline u16 w5300_read_direct(struct w5300_priv *priv, u16 addr) |
| { |
| return ioread16(priv->base + (addr << CONFIG_WIZNET_BUS_SHIFT)); |
| } |
| |
| static inline void w5300_write_direct(struct w5300_priv *priv, |
| u16 addr, u16 data) |
| { |
| iowrite16(data, priv->base + (addr << CONFIG_WIZNET_BUS_SHIFT)); |
| } |
| |
| /* |
| * In indirect address mode host system indirectly accesses registers by |
| * using Indirect Mode Address Register (IDM_AR) and Indirect Mode Data |
| * Register (IDM_DR), which are directly mapped to Memory-Mapped I/O space. |
| * Mode Register (MR) is directly accessible. |
| * |
| * Only 0x06 bytes are required for memory space. |
| */ |
| #define W5300_IDM_AR 0x0002 /* Indirect Mode Address */ |
| #define W5300_IDM_DR 0x0004 /* Indirect Mode Data */ |
| |
| static u16 w5300_read_indirect(struct w5300_priv *priv, u16 addr) |
| { |
| unsigned long flags; |
| u16 data; |
| |
| spin_lock_irqsave(&priv->reg_lock, flags); |
| w5300_write_direct(priv, W5300_IDM_AR, addr); |
| mmiowb(); |
| data = w5300_read_direct(priv, W5300_IDM_DR); |
| spin_unlock_irqrestore(&priv->reg_lock, flags); |
| |
| return data; |
| } |
| |
| static void w5300_write_indirect(struct w5300_priv *priv, u16 addr, u16 data) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&priv->reg_lock, flags); |
| w5300_write_direct(priv, W5300_IDM_AR, addr); |
| mmiowb(); |
| w5300_write_direct(priv, W5300_IDM_DR, data); |
| mmiowb(); |
| spin_unlock_irqrestore(&priv->reg_lock, flags); |
| } |
| |
| #if defined(CONFIG_WIZNET_BUS_DIRECT) |
| #define w5300_read w5300_read_direct |
| #define w5300_write w5300_write_direct |
| |
| #elif defined(CONFIG_WIZNET_BUS_INDIRECT) |
| #define w5300_read w5300_read_indirect |
| #define w5300_write w5300_write_indirect |
| |
| #else /* CONFIG_WIZNET_BUS_ANY */ |
| #define w5300_read priv->read |
| #define w5300_write priv->write |
| #endif |
| |
| static u32 w5300_read32(struct w5300_priv *priv, u16 addr) |
| { |
| u32 data; |
| data = w5300_read(priv, addr) << 16; |
| data |= w5300_read(priv, addr + 2); |
| return data; |
| } |
| |
| static void w5300_write32(struct w5300_priv *priv, u16 addr, u32 data) |
| { |
| w5300_write(priv, addr, data >> 16); |
| w5300_write(priv, addr + 2, data); |
| } |
| |
| static int w5300_command(struct w5300_priv *priv, u16 cmd) |
| { |
| unsigned long timeout = jiffies + msecs_to_jiffies(100); |
| |
| w5300_write(priv, W5300_S0_CR, cmd); |
| mmiowb(); |
| |
| while (w5300_read(priv, W5300_S0_CR) != 0) { |
| if (time_after(jiffies, timeout)) |
| return -EIO; |
| cpu_relax(); |
| } |
| |
| return 0; |
| } |
| |
| static void w5300_read_frame(struct w5300_priv *priv, u8 *buf, int len) |
| { |
| u16 fifo; |
| int i; |
| |
| for (i = 0; i < len; i += 2) { |
| fifo = w5300_read(priv, W5300_S0_RX_FIFO); |
| *buf++ = fifo >> 8; |
| *buf++ = fifo; |
| } |
| fifo = w5300_read(priv, W5300_S0_RX_FIFO); |
| fifo = w5300_read(priv, W5300_S0_RX_FIFO); |
| } |
| |
| static void w5300_write_frame(struct w5300_priv *priv, u8 *buf, int len) |
| { |
| u16 fifo; |
| int i; |
| |
| for (i = 0; i < len; i += 2) { |
| fifo = *buf++ << 8; |
| fifo |= *buf++; |
| w5300_write(priv, W5300_S0_TX_FIFO, fifo); |
| } |
| w5300_write32(priv, W5300_S0_TX_WRSR, len); |
| } |
| |
| static void w5300_write_macaddr(struct w5300_priv *priv) |
| { |
| struct net_device *ndev = priv->ndev; |
| w5300_write32(priv, W5300_SHARL, |
| ndev->dev_addr[0] << 24 | |
| ndev->dev_addr[1] << 16 | |
| ndev->dev_addr[2] << 8 | |
| ndev->dev_addr[3]); |
| w5300_write(priv, W5300_SHARH, |
| ndev->dev_addr[4] << 8 | |
| ndev->dev_addr[5]); |
| mmiowb(); |
| } |
| |
| static void w5300_hw_reset(struct w5300_priv *priv) |
| { |
| w5300_write_direct(priv, W5300_MR, MR_RST); |
| mmiowb(); |
| mdelay(5); |
| w5300_write_direct(priv, W5300_MR, priv->indirect ? |
| MR_WDF(7) | MR_PB | MR_IND : |
| MR_WDF(7) | MR_PB); |
| mmiowb(); |
| w5300_write(priv, W5300_IMR, 0); |
| w5300_write_macaddr(priv); |
| |
| /* Configure 128K of internal memory |
| * as 64K RX fifo and 64K TX fifo |
| */ |
| w5300_write32(priv, W5300_RMSRL, 64 << 24); |
| w5300_write32(priv, W5300_RMSRH, 0); |
| w5300_write32(priv, W5300_TMSRL, 64 << 24); |
| w5300_write32(priv, W5300_TMSRH, 0); |
| w5300_write(priv, W5300_MTYPE, 0x00ff); |
| mmiowb(); |
| } |
| |
| static void w5300_hw_start(struct w5300_priv *priv) |
| { |
| w5300_write(priv, W5300_S0_MR, priv->promisc ? |
| S0_MR_MACRAW : S0_MR_MACRAW_MF); |
| mmiowb(); |
| w5300_command(priv, S0_CR_OPEN); |
| w5300_write(priv, W5300_S0_IMR, S0_IR_RECV | S0_IR_SENDOK); |
| w5300_write(priv, W5300_IMR, IR_S0); |
| mmiowb(); |
| } |
| |
| static void w5300_hw_close(struct w5300_priv *priv) |
| { |
| w5300_write(priv, W5300_IMR, 0); |
| mmiowb(); |
| w5300_command(priv, S0_CR_CLOSE); |
| } |
| |
| /*********************************************************************** |
| * |
| * Device driver functions / callbacks |
| * |
| ***********************************************************************/ |
| |
| static void w5300_get_drvinfo(struct net_device *ndev, |
| struct ethtool_drvinfo *info) |
| { |
| strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); |
| strlcpy(info->version, DRV_VERSION, sizeof(info->version)); |
| strlcpy(info->bus_info, dev_name(ndev->dev.parent), |
| sizeof(info->bus_info)); |
| } |
| |
| static u32 w5300_get_link(struct net_device *ndev) |
| { |
| struct w5300_priv *priv = netdev_priv(ndev); |
| |
| if (gpio_is_valid(priv->link_gpio)) |
| return !!gpio_get_value(priv->link_gpio); |
| |
| return 1; |
| } |
| |
| static u32 w5300_get_msglevel(struct net_device *ndev) |
| { |
| struct w5300_priv *priv = netdev_priv(ndev); |
| |
| return priv->msg_enable; |
| } |
| |
| static void w5300_set_msglevel(struct net_device *ndev, u32 value) |
| { |
| struct w5300_priv *priv = netdev_priv(ndev); |
| |
| priv->msg_enable = value; |
| } |
| |
| static int w5300_get_regs_len(struct net_device *ndev) |
| { |
| return W5300_REGS_LEN; |
| } |
| |
| static void w5300_get_regs(struct net_device *ndev, |
| struct ethtool_regs *regs, void *_buf) |
| { |
| struct w5300_priv *priv = netdev_priv(ndev); |
| u8 *buf = _buf; |
| u16 addr; |
| u16 data; |
| |
| regs->version = 1; |
| for (addr = 0; addr < W5300_REGS_LEN; addr += 2) { |
| switch (addr & 0x23f) { |
| case W5300_S0_TX_FIFO: /* cannot read TX_FIFO */ |
| case W5300_S0_RX_FIFO: /* cannot read RX_FIFO */ |
| data = 0xffff; |
| break; |
| default: |
| data = w5300_read(priv, addr); |
| break; |
| } |
| *buf++ = data >> 8; |
| *buf++ = data; |
| } |
| } |
| |
| static void w5300_tx_timeout(struct net_device *ndev) |
| { |
| struct w5300_priv *priv = netdev_priv(ndev); |
| |
| netif_stop_queue(ndev); |
| w5300_hw_reset(priv); |
| w5300_hw_start(priv); |
| ndev->stats.tx_errors++; |
| ndev->trans_start = jiffies; |
| netif_wake_queue(ndev); |
| } |
| |
| static int w5300_start_tx(struct sk_buff *skb, struct net_device *ndev) |
| { |
| struct w5300_priv *priv = netdev_priv(ndev); |
| |
| netif_stop_queue(ndev); |
| |
| w5300_write_frame(priv, skb->data, skb->len); |
| mmiowb(); |
| ndev->stats.tx_packets++; |
| ndev->stats.tx_bytes += skb->len; |
| dev_kfree_skb(skb); |
| netif_dbg(priv, tx_queued, ndev, "tx queued\n"); |
| |
| w5300_command(priv, S0_CR_SEND); |
| |
| return NETDEV_TX_OK; |
| } |
| |
| static int w5300_napi_poll(struct napi_struct *napi, int budget) |
| { |
| struct w5300_priv *priv = container_of(napi, struct w5300_priv, napi); |
| struct net_device *ndev = priv->ndev; |
| struct sk_buff *skb; |
| int rx_count; |
| u16 rx_len; |
| |
| for (rx_count = 0; rx_count < budget; rx_count++) { |
| u32 rx_fifo_len = w5300_read32(priv, W5300_S0_RX_RSR); |
| if (rx_fifo_len == 0) |
| break; |
| |
| rx_len = w5300_read(priv, W5300_S0_RX_FIFO); |
| |
| skb = netdev_alloc_skb_ip_align(ndev, roundup(rx_len, 2)); |
| if (unlikely(!skb)) { |
| u32 i; |
| for (i = 0; i < rx_fifo_len; i += 2) |
| w5300_read(priv, W5300_S0_RX_FIFO); |
| ndev->stats.rx_dropped++; |
| return -ENOMEM; |
| } |
| |
| skb_put(skb, rx_len); |
| w5300_read_frame(priv, skb->data, rx_len); |
| skb->protocol = eth_type_trans(skb, ndev); |
| |
| netif_receive_skb(skb); |
| ndev->stats.rx_packets++; |
| ndev->stats.rx_bytes += rx_len; |
| } |
| |
| if (rx_count < budget) { |
| w5300_write(priv, W5300_IMR, IR_S0); |
| mmiowb(); |
| napi_complete(napi); |
| } |
| |
| return rx_count; |
| } |
| |
| static irqreturn_t w5300_interrupt(int irq, void *ndev_instance) |
| { |
| struct net_device *ndev = ndev_instance; |
| struct w5300_priv *priv = netdev_priv(ndev); |
| |
| int ir = w5300_read(priv, W5300_S0_IR); |
| if (!ir) |
| return IRQ_NONE; |
| w5300_write(priv, W5300_S0_IR, ir); |
| mmiowb(); |
| |
| if (ir & S0_IR_SENDOK) { |
| netif_dbg(priv, tx_done, ndev, "tx done\n"); |
| netif_wake_queue(ndev); |
| } |
| |
| if (ir & S0_IR_RECV) { |
| if (napi_schedule_prep(&priv->napi)) { |
| w5300_write(priv, W5300_IMR, 0); |
| mmiowb(); |
| __napi_schedule(&priv->napi); |
| } |
| } |
| |
| return IRQ_HANDLED; |
| } |
| |
| static irqreturn_t w5300_detect_link(int irq, void *ndev_instance) |
| { |
| struct net_device *ndev = ndev_instance; |
| struct w5300_priv *priv = netdev_priv(ndev); |
| |
| if (netif_running(ndev)) { |
| if (gpio_get_value(priv->link_gpio) != 0) { |
| netif_info(priv, link, ndev, "link is up\n"); |
| netif_carrier_on(ndev); |
| } else { |
| netif_info(priv, link, ndev, "link is down\n"); |
| netif_carrier_off(ndev); |
| } |
| } |
| |
| return IRQ_HANDLED; |
| } |
| |
| static void w5300_set_rx_mode(struct net_device *ndev) |
| { |
| struct w5300_priv *priv = netdev_priv(ndev); |
| bool set_promisc = (ndev->flags & IFF_PROMISC) != 0; |
| |
| if (priv->promisc != set_promisc) { |
| priv->promisc = set_promisc; |
| w5300_hw_start(priv); |
| } |
| } |
| |
| static int w5300_set_macaddr(struct net_device *ndev, void *addr) |
| { |
| struct w5300_priv *priv = netdev_priv(ndev); |
| struct sockaddr *sock_addr = addr; |
| |
| if (!is_valid_ether_addr(sock_addr->sa_data)) |
| return -EADDRNOTAVAIL; |
| memcpy(ndev->dev_addr, sock_addr->sa_data, ETH_ALEN); |
| ndev->addr_assign_type &= ~NET_ADDR_RANDOM; |
| w5300_write_macaddr(priv); |
| return 0; |
| } |
| |
| static int w5300_open(struct net_device *ndev) |
| { |
| struct w5300_priv *priv = netdev_priv(ndev); |
| |
| netif_info(priv, ifup, ndev, "enabling\n"); |
| if (!is_valid_ether_addr(ndev->dev_addr)) |
| return -EINVAL; |
| w5300_hw_start(priv); |
| napi_enable(&priv->napi); |
| netif_start_queue(ndev); |
| if (!gpio_is_valid(priv->link_gpio) || |
| gpio_get_value(priv->link_gpio) != 0) |
| netif_carrier_on(ndev); |
| return 0; |
| } |
| |
| static int w5300_stop(struct net_device *ndev) |
| { |
| struct w5300_priv *priv = netdev_priv(ndev); |
| |
| netif_info(priv, ifdown, ndev, "shutting down\n"); |
| w5300_hw_close(priv); |
| netif_carrier_off(ndev); |
| netif_stop_queue(ndev); |
| napi_disable(&priv->napi); |
| return 0; |
| } |
| |
| static const struct ethtool_ops w5300_ethtool_ops = { |
| .get_drvinfo = w5300_get_drvinfo, |
| .get_msglevel = w5300_get_msglevel, |
| .set_msglevel = w5300_set_msglevel, |
| .get_link = w5300_get_link, |
| .get_regs_len = w5300_get_regs_len, |
| .get_regs = w5300_get_regs, |
| }; |
| |
| static const struct net_device_ops w5300_netdev_ops = { |
| .ndo_open = w5300_open, |
| .ndo_stop = w5300_stop, |
| .ndo_start_xmit = w5300_start_tx, |
| .ndo_tx_timeout = w5300_tx_timeout, |
| .ndo_set_rx_mode = w5300_set_rx_mode, |
| .ndo_set_mac_address = w5300_set_macaddr, |
| .ndo_validate_addr = eth_validate_addr, |
| .ndo_change_mtu = eth_change_mtu, |
| }; |
| |
| static int __devinit w5300_hw_probe(struct platform_device *pdev) |
| { |
| struct wiznet_platform_data *data = pdev->dev.platform_data; |
| struct net_device *ndev = platform_get_drvdata(pdev); |
| struct w5300_priv *priv = netdev_priv(ndev); |
| const char *name = netdev_name(ndev); |
| struct resource *mem; |
| int mem_size; |
| int irq; |
| int ret; |
| |
| if (data && is_valid_ether_addr(data->mac_addr)) { |
| memcpy(ndev->dev_addr, data->mac_addr, ETH_ALEN); |
| } else { |
| random_ether_addr(ndev->dev_addr); |
| ndev->addr_assign_type |= NET_ADDR_RANDOM; |
| } |
| |
| mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| if (!mem) |
| return -ENXIO; |
| mem_size = resource_size(mem); |
| if (!devm_request_mem_region(&pdev->dev, mem->start, mem_size, name)) |
| return -EBUSY; |
| priv->base = devm_ioremap(&pdev->dev, mem->start, mem_size); |
| if (!priv->base) |
| return -EBUSY; |
| |
| spin_lock_init(&priv->reg_lock); |
| priv->indirect = mem_size < W5300_BUS_DIRECT_SIZE; |
| if (priv->indirect) { |
| priv->read = w5300_read_indirect; |
| priv->write = w5300_write_indirect; |
| } else { |
| priv->read = w5300_read_direct; |
| priv->write = w5300_write_direct; |
| } |
| |
| w5300_hw_reset(priv); |
| if (w5300_read(priv, W5300_IDR) != IDR_W5300) |
| return -ENODEV; |
| |
| irq = platform_get_irq(pdev, 0); |
| if (irq < 0) |
| return irq; |
| ret = request_irq(irq, w5300_interrupt, |
| IRQ_TYPE_LEVEL_LOW, name, ndev); |
| if (ret < 0) |
| return ret; |
| priv->irq = irq; |
| |
| priv->link_gpio = data ? data->link_gpio : -EINVAL; |
| if (gpio_is_valid(priv->link_gpio)) { |
| char *link_name = devm_kzalloc(&pdev->dev, 16, GFP_KERNEL); |
| if (!link_name) |
| return -ENOMEM; |
| snprintf(link_name, 16, "%s-link", name); |
| priv->link_irq = gpio_to_irq(priv->link_gpio); |
| if (request_any_context_irq(priv->link_irq, w5300_detect_link, |
| IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, |
| link_name, priv->ndev) < 0) |
| priv->link_gpio = -EINVAL; |
| } |
| |
| netdev_info(ndev, "at 0x%llx irq %d\n", (u64)mem->start, irq); |
| return 0; |
| } |
| |
| static int __devinit w5300_probe(struct platform_device *pdev) |
| { |
| struct w5300_priv *priv; |
| struct net_device *ndev; |
| int err; |
| |
| ndev = alloc_etherdev(sizeof(*priv)); |
| if (!ndev) |
| return -ENOMEM; |
| SET_NETDEV_DEV(ndev, &pdev->dev); |
| platform_set_drvdata(pdev, ndev); |
| priv = netdev_priv(ndev); |
| priv->ndev = ndev; |
| |
| ether_setup(ndev); |
| ndev->netdev_ops = &w5300_netdev_ops; |
| ndev->ethtool_ops = &w5300_ethtool_ops; |
| ndev->watchdog_timeo = HZ; |
| netif_napi_add(ndev, &priv->napi, w5300_napi_poll, 16); |
| |
| /* This chip doesn't support VLAN packets with normal MTU, |
| * so disable VLAN for this device. |
| */ |
| ndev->features |= NETIF_F_VLAN_CHALLENGED; |
| |
| err = register_netdev(ndev); |
| if (err < 0) |
| goto err_register; |
| |
| err = w5300_hw_probe(pdev); |
| if (err < 0) |
| goto err_hw_probe; |
| |
| return 0; |
| |
| err_hw_probe: |
| unregister_netdev(ndev); |
| err_register: |
| free_netdev(ndev); |
| platform_set_drvdata(pdev, NULL); |
| return err; |
| } |
| |
| static int __devexit w5300_remove(struct platform_device *pdev) |
| { |
| struct net_device *ndev = platform_get_drvdata(pdev); |
| struct w5300_priv *priv = netdev_priv(ndev); |
| |
| w5300_hw_reset(priv); |
| free_irq(priv->irq, ndev); |
| if (gpio_is_valid(priv->link_gpio)) |
| free_irq(priv->link_irq, ndev); |
| |
| unregister_netdev(ndev); |
| free_netdev(ndev); |
| platform_set_drvdata(pdev, NULL); |
| return 0; |
| } |
| |
| #ifdef CONFIG_PM |
| static int w5300_suspend(struct device *dev) |
| { |
| struct platform_device *pdev = to_platform_device(dev); |
| struct net_device *ndev = platform_get_drvdata(pdev); |
| struct w5300_priv *priv = netdev_priv(ndev); |
| |
| if (netif_running(ndev)) { |
| netif_carrier_off(ndev); |
| netif_device_detach(ndev); |
| |
| w5300_hw_close(priv); |
| } |
| return 0; |
| } |
| |
| static int w5300_resume(struct device *dev) |
| { |
| struct platform_device *pdev = to_platform_device(dev); |
| struct net_device *ndev = platform_get_drvdata(pdev); |
| struct w5300_priv *priv = netdev_priv(ndev); |
| |
| if (!netif_running(ndev)) { |
| w5300_hw_reset(priv); |
| w5300_hw_start(priv); |
| |
| netif_device_attach(ndev); |
| if (!gpio_is_valid(priv->link_gpio) || |
| gpio_get_value(priv->link_gpio) != 0) |
| netif_carrier_on(ndev); |
| } |
| return 0; |
| } |
| #endif /* CONFIG_PM */ |
| |
| static SIMPLE_DEV_PM_OPS(w5300_pm_ops, w5300_suspend, w5300_resume); |
| |
| static struct platform_driver w5300_driver = { |
| .driver = { |
| .name = DRV_NAME, |
| .owner = THIS_MODULE, |
| .pm = &w5300_pm_ops, |
| }, |
| .probe = w5300_probe, |
| .remove = __devexit_p(w5300_remove), |
| }; |
| |
| module_platform_driver(w5300_driver); |